230 EDWARD NORTON, 



9. — Black; antennEe long; head mostly yellow, black behind, a 

 large black spot on the vertex, trilobed below, extending from antennae 

 to occiput, broadly touching the summit of the eyes and not extend- 

 ing down without, black ; tegulae, most of collar, V-spot, a spot before 

 scutel, upper and lower edges of basal plates, and a spot beneath their 

 sides, a spot on pleura connecting base of wings, a large angulate mark 

 below, a spot on pectus and basal two-thirds of venter, pale yellow ; 

 legs whitish, posterior coxae, except at tip, a slender line on four ante- 

 rior legs above, apical half of posterior femora, their tibiae at tip and 

 tarsi black ; wings hyaline. 



% . — The male has the whole body beneath greenish waxen-yellow, 

 the angulate spot on pleura enlarged and indistinctly reddish-yellow 

 spots at junction of segments of tergum; hinder tarsi black. 



New England ; New York. 



This is closely allied to T. ventralis, if it is not the same. 



8. T. ventralis. 



Allantus ventralis, Say, West. Quart. Rep. II. 1823, 72. 1. 



Norton, Bost. Jour. vii. 253, 33. 

 Tenthredo ventralis, Norton, Bost. Proc. ix. 121. 

 " Black, feet before and abdomen beneath white. Length nine-twentieths 

 of an inch. 



" Body black ; nasus, labrum, mouth, abbreviated line above the eye 

 and large spot beneath it, white ; thorax with a line before the wing 

 and small spot each side on the scutel, white; wings a little dusky; 

 feet white before; pectus with a white line on each side and somewhat 

 testaceous central spot; tergum immaculate; venter white. 

 " Inhabits Arkansa." 



9. T. angulatus. 



Tenthredo angulatus, Norton, Proc. Ent. Soc. Phil. III. 1864, 13. 27.'^. 

 Black; orbits and mouth, collar, V-spot, angular line and spot on pleura and 

 the breast white, apical half of abdomen rufous. Length 0.32. Br. wings 

 0.70 in. 



%. — Black; antennae long, third joint a little longer than fourth; 

 an orbital line, interrupted at summit and diverging from outer side of 

 eye above, face below antennae, collar, V-spot, a large slender angular 

 line on pleura, a spot above posterior coxae and the breast, straw-white ; 

 abdomen rufous, the two basal segments and sides of the third black 

 above, paler at base beneath ; coxae black above, the four anterior legs 

 white, black above; posterior legs black, their trochanters white and 

 femora whitish in the middle; wings hyaline, nervures blackish. 

 Massachusetts. (Coll. Am. Ent. Soc. 



